CANTERBURY 



325 



METERS 

 900-1— 



ISOPLETHS OF MODIFIED REFRACTIVE INDEX 



4IO-X-rr4JO 



0^--^ ^^- - :r_i~ -400 



FEET 



5000 



METERS 

 300+-- 



200- - 



20 20 



—LAND SEA— 



—LAND SEA 



60 80 100 120 140 

 RANGE FROM COAST (KILOMETERS) 



20 10 20 40 



M CURVES 

 80 100 



120 140 160 



100 



340 



i 



\k 



t 



W 



T 



I 



w 



V 



340 340 340 340 340 340 340 340 340 

 HORIZONTAL SCALE= ONE DIVISION -10 M UNITS 



340 340 



800 

 «00 



y1440o 



V--200 



-lU-0 

 340 



NOTE: VERTICAL SCALE CHANGE ABOVE 300 KM 



(ADAPTED FROM CAHTEBBURy PROJECT) 



-NEW ZEALAND- 



X DENOTES RAOB SITES 

 LAND OVER 1500 FEET 



36 S 



40 S 



44 S 



Figure 8.10. Isopleths and curves of refractive index for November 5, 1947, Canterbury, 



with a map locating sources of meteorological data. 



(Courtesy of the Canterbury project). 



